Comfortable & Eco Friendly Material: made of soft and Eco Friendly EVA food grade material of the inner layer, tasteless, safe, non-toxic, which gives super comfortable feeling, and the breathing channel design makes breathing easier. It doesn't hurt your gums lips, or causes pain and uncomfortable. Size: Each Youth Mouth Guard is 5.9 x 4.6 x 1.9cm/2.32 x 1.81 x 0.75inch, suitable for youth above 10-15 years old. It was easy to mold to youth teeth get the perfect fit and works perfectly fine, make it easy to talk, breath and drink without removing the guards. Sports Mouth Guards are consumables, we recommend replacing it every 3 months, please disinfect before and after use. It also comes with plastic carrying case, so sports mouth guard will not get lost and easy to storage. Dual Layer Mouthguard: The Dual Layer mouthguard is thicker than average, and shock absorption design at the bottom provides excellent protection to your mouth. And we provide you 6 most popular colors for you to choose from. The mouth piece is required or recommended for many sports, like football, basketball, boxing, MMA, hockey, lacrosse, soccer, Martial Arts. It provide the best fit with shock absorbent protection for you gums, teeth, and lips.